1 /*---------------------------------------------------------------------------*
2 * <RCS keywords>
3 *
4 * C++ Library
5 *
6 * Copyright 1992-1994, David Gottner
7 *
8 * All Rights Reserved
9 *
10 * Permission to use, copy, modify, and distribute this software and its
11 * documentation for any purpose and without fee is hereby granted,
12 * provided that the above copyright notice, this permission notice and
13 * the following disclaimer notice appear unmodified in all copies.
14 *
15 * I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I
17 * BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
18 * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER
19 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
20 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21 *
22 * Nevertheless, I would like to know about bugs in this library or
23 * suggestions for improvment. Send bug reports and feedback to
24 * davegottner@delphi.com.
25 *---------------------------------------------------------------------------*/
26
27 /* Modified to support --help and --version, as well as /? on Windows
28 * by Georg Brandl. */
29
30 #include <Python.h>
31 #include <stdio.h>
32 #include <string.h>
33 #include <wchar.h>
34 #include <pygetopt.h>
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 int _PyOS_opterr = 1; /* generate error messages */
41 int _PyOS_optind = 1; /* index into argv array */
42 wchar_t *_PyOS_optarg = NULL; /* optional argument */
43
44 static wchar_t *opt_ptr = L"";
45
_PyOS_ResetGetOpt(void)46 void _PyOS_ResetGetOpt(void)
47 {
48 _PyOS_opterr = 1;
49 _PyOS_optind = 1;
50 _PyOS_optarg = NULL;
51 opt_ptr = L"";
52 }
53
_PyOS_GetOpt(int argc,wchar_t ** argv,wchar_t * optstring)54 int _PyOS_GetOpt(int argc, wchar_t **argv, wchar_t *optstring)
55 {
56 wchar_t *ptr;
57 wchar_t option;
58
59 if (*opt_ptr == '\0') {
60
61 if (_PyOS_optind >= argc)
62 return -1;
63 #ifdef MS_WINDOWS
64 else if (wcscmp(argv[_PyOS_optind], L"/?") == 0) {
65 ++_PyOS_optind;
66 return 'h';
67 }
68 #endif
69
70 else if (argv[_PyOS_optind][0] != L'-' ||
71 argv[_PyOS_optind][1] == L'\0' /* lone dash */ )
72 return -1;
73
74 else if (wcscmp(argv[_PyOS_optind], L"--") == 0) {
75 ++_PyOS_optind;
76 return -1;
77 }
78
79 else if (wcscmp(argv[_PyOS_optind], L"--help") == 0) {
80 ++_PyOS_optind;
81 return 'h';
82 }
83
84 else if (wcscmp(argv[_PyOS_optind], L"--version") == 0) {
85 ++_PyOS_optind;
86 return 'V';
87 }
88
89
90 opt_ptr = &argv[_PyOS_optind++][1];
91 }
92
93 if ((option = *opt_ptr++) == L'\0')
94 return -1;
95
96 if (option == 'J') {
97 if (_PyOS_opterr)
98 fprintf(stderr, "-J is reserved for Jython\n");
99 return '_';
100 }
101
102 if ((ptr = wcschr(optstring, option)) == NULL) {
103 if (_PyOS_opterr)
104 fprintf(stderr, "Unknown option: -%c\n", (char)option);
105 return '_';
106 }
107
108 if (*(ptr + 1) == L':') {
109 if (*opt_ptr != L'\0') {
110 _PyOS_optarg = opt_ptr;
111 opt_ptr = L"";
112 }
113
114 else {
115 if (_PyOS_optind >= argc) {
116 if (_PyOS_opterr)
117 fprintf(stderr,
118 "Argument expected for the -%c option\n", (char)option);
119 return '_';
120 }
121
122 _PyOS_optarg = argv[_PyOS_optind++];
123 }
124 }
125
126 return option;
127 }
128
129 #ifdef __cplusplus
130 }
131 #endif
132
133